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Here we consider the existence of an ubiquitous dark superfluid which fills the universe corresponding to dark energy (~70% of the universe mass-energy, also expressed in the cosmological constant) and dark matter. As in other superfluids, quantum vortices would originate, whose geometry can describe the spin of fundamental particles, suggesting th...

Exercises and simulations focusing on the single and multiple measurement of an ensemble of spin-1/2 systems. In addition, these exercises also simulate the time evolution of spin states in an external magnetic field (spin precession). A Java Virtual Machine installed is required.

This hypothesis starts from considering the physical vacuum as a superfluid quantum medium, that we call superfluid quantum space (SQS), close to the previous concepts of quantum vacuum, quantum foam, superfluid vacuum etc.[1, 2, 3] We usually believe that quantum vacuum is populated by an enormous amount of particles pairs (e.g. couples \mathrm{e^...

X-band electron spin resonance (ESR) measurements have been performed on a conducting free-standing film of polyaniline plasticized and protonated with di-n-dodecyl ester of sulfosuccinic acid (DDoESSA). The magnetic field was applied parallel and perpendicular to the plane of the film. At around 75 K a transition is observed from Pauli susceptibil...

X-band electron spin resonance (ESR) measurements have been performed on a conducting free-standing film of polyaniline plasticized and protonated with di-n-dodecyl ester of sulfosuccinic acid (DDoESSA). The magnetic field was applied parallel and perpendicular to the plane of the film. At around 75 K a transition is observed from Pauli susceptibil...

X-band electron spin resonance (ESR) measurements have been performed on a conducting free-standing film of polyaniline plasticized and protonated with di-n-dodecyl ester of sulfosuccinic acid (DDoESSA). The magnetic field was applied parallel and perpendicular to the plane of the film. At around 75 K a transition is observed from Pauli susceptibil...

X-band electron spin resonance (ESR) measurements have been performed on a conducting free-standing film of polyaniline plasticized and protonated with di-n-dodecyl ester of sulfosuccinic acid (DDoESSA). The magnetic field was applied parallel and perpendicular to the plane of the film. At around 75 K a transition is observed from Pauli susceptibil...

Exercises and simulations focusing on the single and multiple measurement of an ensemble of spin-1/2 systems. In addition, these exercises also simulate the time evolution of spin states in an external magnetic field (spin precession). A Java Virtual Machine installed is required.